Home / 439,465.20-659,111.40-143,977.20

Finding the Fourth Proportional to 439,465.20, 659,111.40 and 143,977.20

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Solution

The fourth proportional to 439,465.20, 659,111.40 and 143,977.20 is: 215,937.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,465.20 : 659,111.40 = 143,977.20 : x
  2. Step 2: Convert to fraction form
    439,465.20/659,111.40 = 143,977.20/x
  3. Step 3: Cross multiply
    439,465.20x = 659,111.40 × 143,977.20
  4. Step 4: Simplify right side
    439,465.20x = 94,897,013,860.08
  5. Step 5: Solve for x
    x = 94,897,013,860.08/439,465.20
  6. Step 6: Final answer
    x = 215,937.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.